Fix loading serverlist entry from CSV file

[pljones]

Short description of changes

The server list persistence code has a but that causes corruption of the server name and city when the file is read. It truncates the base64-encoded value to the max field length -- before decoding it

This fixes the code to truncate after decoding.

CHANGELOG: Fix loading of persistent server list entries

Context: Fixes an issue?

See above.

Does this change need documentation? What needs to be documented and how?

No. Fix for existing feature.

Status of this Pull Request

Test and running on all my directories.

What is missing until this pull request can be merged?

Approvals.

Checklist

• I've verified that this Pull Request follows the general code principles
• I tested my code and it does what I want
• My code follows the style guide
• I waited some time after this Pull Request was opened and all GitHub checks completed without errors.
• I've filled all the content above

[ann0see]

Approving on the assumption it is well tested (looks trivial)

[hoffie]

Heh, in hindsight the fix looks obvious... ;)

[pljones]

Yeah, I was testing something else and kept seeing this truncation happening. Eventually looked at this bit of the code and went "...D'uh..."